1 from Tkinter import *

     2 

     3 # This is a program that makes a simple two button application

     4 

     5 

     6 class New_Button(Button):

     7     def callback(self):

     8         print self.counter

     9         self.counter = self.counter + 1

    10 

    11 def createWidgets(top):

    12     f = Frame(top)

    13     f.pack()

    14     f.QUIT = Button(f, text='QUIT', foreground='red', command=top.quit)

    15 

    16     f.QUIT.pack(side=LEFT, fill=BOTH)

    17 

    18     # a hello button

    19     f.hi_there = New_Button(f, text='Hello')

    20     # we do this on a different line because we need to reference f.hi_there

    21     f.hi_there.config(command=f.hi_there.callback)

    22     f.hi_there.pack(side=LEFT)

    23     f.hi_there.counter = 43

    24 

    25 

    26 root = Tk()

    27 createWidgets(root)

    28 root.mainloop()